Bug 29845

Summary: backlight control stopped working with 19c48d3b3f33582baa87a9b3a9189e320e4cea45 on Thinkpad T400
Product: xorg Reporter: Felix Möller <felix>
Component: Driver/intelAssignee: Carl Worth <cworth>
Status: RESOLVED DUPLICATE QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium    
Version: git   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:

Description Felix Möller 2010-08-27 14:43:34 UTC 
Hi,

after hours of bisecting I found the offending commit:
19c48d3b3f33582baa87a9b3a9189e320e4cea45

<http://cgit.freedesktop.org/xorg/driver/xf86-video-intel/commit/?id=19c48d3b3f33582baa87a9b3a9189e320e4cea45> breaks my backlight control. The light is then fixed at the lowest possible brightness.
Comment 1 Chris Wilson 2010-09-01 08:26:34 UTC 
Kernel bug - some of the backlight control paths do not respect the legacy mode.

*** This bug has been marked as a duplicate of bug 29716 ***

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